Governor



Dec. 17, 1940.

R. F. SMITH 2,225,238

GOVERNOR Filed June 7, 1937 cfizvezzfior A 59 gid y fZUFzzzZQ fig Patented Dec. 17, 1940 GOVERNOR Ray F. Smith, Des Moines, Iowa, assignor to Ideal Manufacturing Company, Des Moines, Iowa, a

corporation of Iowa Application June "1, 1937, Serial No. 146,720

1 Claim.

The object of my invention is to provide a governor of simple, sturdy and economical construction for installatiton on an internal com bustion engine, for regulating the speed at which 5 the engine operates.

Another object is to provide a universal mounting for such governor whereby the governor may be mounted upon any engine.

With these and other objects in View, my invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawing, in which:

Figure 1 is a perspective view of my governor and universal mounting.

Figure 2 is a detail sectional view taken on the line 2--2 of Figure 1, illustrating the governor and further illustrating the connection thereof with the throttle lever.

Figures 3 and 4 are side elevations illustrating the mounting of the governor on different engines; and

Figure 5 is a perspective view illustrating a different way of mounting the governor.

My improved governor is being manufactured and sold largely for installation upon engines that have been removed from automobiles and are being used as power plants for operating saws, feed grinders and so on. The governor is also available for tractors and trucks.

Broadly speaking, it involves the operation of the throttle valve in accordance with the vacuum inthe intake manifold.

In the accompanying drawing I have shown the body of my governor made in twohalves shown at l and H. H have adjacent annular flanges I2 and I3 adapted to be locked together by screws' M. The body members are formed with recesses l and I6 which register with each other when the body members are fastened together and form a diaphragm chamber.

A diaphragm ll, which may be of any suitable material, for instance a pair of disks of flexible rubber, has its periphery firmly gripped between the flanges l2 and I3 as shown in Figure 2. In the member l0 there is a passage [5' connecting the recess IS with the atmosphere, thereby setting up atmospheric pressure on one side of the diaphragm l1.

Extending from the recess l6 to the exterior of the body member II is a bore or passage Hi, the outer part of which is internally screw The body members In and.

threaded as at I9 to receive an adjusting screw on which is the lock nut 2|.

In the body member ID a bore or passage 22 leads from the recess I5- to the exterior of the body. A stem 23 is slidably extended through the passage 22 and has on its inner end a head 24 which is properly secured to the diaphragm 11.

A coil spring 25 in the bore l8 extends between the adjusting screw 20 and the head 24. The outer end of the stem 23 is threaded as at 26 to receive one end of a turnbuckle 21. The other end of the turnbuckle 21 is threaded on the rod 28.

In practical use the rod 28 is connected by a link 29 with a throttle arm 30 on the throttle shaft 3| in the fuel passage 32 of an internal combustion engine. A branch passage 33 leads from the passage l8 to the exterior of the body member I I.

A tubular fitting 34 is threaded into is running at the speed which it is desired to maintain for its operation. It should be borne in mind that this is not ordinary'idling speed, but is usually a considerably higher speed.

The parts are so adjusted that when the engine thus, without loads, operates at the desired speed, the vacuum will be high enough to hold the head 24 in its lower dotted line position illustrated in Figure 2. Then during the operation of the engine, if a load is imposed upon the engine, the vacuum to which the under side of the diaphragm is subjected will be reduced and the spring 25 will expand to force the diaphragm upwardly, thereby opening the throttle valve and supplying additional fuel to the engine for causing it to speed up so that the proper speed can be maintained.

be adjusted to determine the tension under which the spring 25 operates.

Universal mounting I have provided a universal mounting for my governor.

A bar 3'! is adjustably fixed to the body member H] by means of a cap screw 38. A

short angle bar 33 is adjustably secured to the bar ceive the cap screw 45. The bar 41 has an elongated slot 49 to receive the cap screw. The bars a 46 and 4'! have at their outer ends opposite por tions 50 and 5| provided with holes 52 and 53 to receive cap screws or the like for fasteningthem to the head bolts or manifold bolts or otherpart of an internal combustion engine. M

This mounting structure is such that the gov? ernor can be conveniently, easily and quickly installed on practically any automobile engine now being manufactured. It will be observedthat the bars 31 and 4| are provided with spaced holes 56 and 51 so that the angle bars can be adjustably mounted at various points in the length of these bars 31 and 4| In Figure 3 I have shown :how the supporting bars may be omitted inusing the governor on a tractor.

The stem 23 is connected by turn buckle structure to the throttle arm 30a. The casing is pivoted to the accelerator rod 59, so as to behung and supported to move with the accelerator rod for operating the throttle.

The movement of the stem 23 is as before ex.- plained for permitting the governor to react automatically to intake conditions.

In Figure 4 the governor is shown applied to a Chevrolet. The arms 46 are fastened to the head boltsfifl and project divergingly horizontally away. The angle bar 43 and the bar '41 are so arranged that the latter projects rearwardly as shown. The angle bar 39 connects to the bar 31 near the end thereof which is secured to the governor, thus illustrating the great varietyof possible arrangements of the parts of the mounting where the governor is so arranged that the stem 23 points horizontally and laterally toward the engine.

In Figure 5 there is another arrangement which is obvious from the drawing.

In Figure 4 the Chevrolet engine is indicated at 6| and in Figure 5 the Plymouth engine is indicated at 62.

A device of this kind has a great many advantages. The advantage in using a diaphragm type of operating device is because it can be readily constructed so there is no leak past the diaphragm. The device has such universal adjustmentthat it can be set to operate an engine at any desiredspeed, or in case of a tractor, truck or motor car, it can be set so the car cannot travel above a certain speed for which the governor may be adjusted.

It is, of course, obvious from the foregoing description that some changes may bemade in the details of construction of my governor, and it is my intentionto cover by my claim any modified forms, which may be reasonably included within the scope of my claim.

I claim as my invention:

Inra speedgovernor for engines, a casing having adjustable attaching means thereon for securingitto an engine in any one of several positions and comprising a pair of external body members positioned face to face having each a recessed portion forming a pocket matching said pocket in the other memberya diaphragm disc sealed between said body members separating said pockets, one of .said pockets being exposed to atmospheric pressure and 'having a bore extending therefrom in axial alignment with the diaphragm and a continuous stem in said bore attached atone end to the center of the diaphragin in axial alignment, therewith and at the other end to a throttle valve arm adapted by movement thereof to control the action of the engineLthe other of said pockets being sealed from theatmosphere and having a connection therefrom to theintakezrranifold, a bore in the other said body membersimaxial alignment with said diaphragm and said stem, a coiled spring in said bore bearing on said diaphragm tending to urge it in a predetermined direction and a threaded adjusting means extending through said other body member to a point outside said member in axial alignment with the spring and stem adapted to permit adjustment of the spring from a position outside said casing.

RAY F. SMITH. 

